When Apple got into the mobile business, it was Nokia’s world. The Finnish company was considered something of a miracle worker. "I'm old enough to remember when Nokia had margins of 25 percent, and there was absolutely no way they were going to be dislodged from their leadership position," says Kuittinen of research firm Alekstra. Says Cook, "I think [Nokia] is a reminder to everyone in business that you have to keep innovating and that to not innovate is to die."

Quite true. If a fingerprint scanner and a 64bit ARM chip are innovation, time will tell, but for now, Apple is surely still atop of its game. The amazing load of iOS 7 application updates and the rapid adoption of Apple's latest is testament to that.

it's no secret that iStuff users pay more for apps and services than others

The split for an average developer is much less drastic.(According to VisionMobile Developer survey) Most of the revenues go to the top publishers/developers.
So unless you are thinking of spitting out 500 games at $1 each, you're better off developing for Android and iOS.